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Nickel 200 Alloy Properties and Applications
Introduction to Nickel 200 (UNS N02200)
Nickel 200, also known as UNS N02200, is a commercially pure wrought nickel alloy with excellent mechanical properties and corrosion resistance. This alloy is widely used in various industries due to its high thermal and electrical conductivity, as well as its ability to withstand extreme environments.
Key Properties of Nickel 200 Alloy
Nickel 200 offers several remarkable properties that make it suitable for demanding applications:
Chemical Composition
The alloy consists of at least 99.0% nickel, with small amounts of other elements:
Keyword: uns n02200
- Nickel (Ni): 99.0% min
- Iron (Fe): 0.40% max
- Manganese (Mn): 0.35% max
- Copper (Cu): 0.25% max
- Carbon (C): 0.15% max
- Silicon (Si): 0.35% max
- Sulfur (S): 0.01% max
Physical Properties
Nickel 200 exhibits excellent physical characteristics:
- Density: 8.89 g/cm³ (0.321 lb/in³)
- Melting Point: 1435-1446°C (2615-2635°F)
- Thermal Conductivity: 70 W/m·K
- Electrical Resistivity: 0.096 µΩ·m
Mechanical Properties
The alloy demonstrates good mechanical strength and ductility:
- Tensile Strength: 462 MPa (67 ksi)
- Yield Strength: 148 MPa (21.5 ksi)
- Elongation: 47%
- Hardness: 80 HRB
Corrosion Resistance
Nickel 200 offers outstanding resistance to various corrosive environments:
- Excellent resistance to caustic alkalis
- Good resistance to neutral and alkaline salt solutions
- Resistant to most organic acids
- Performs well in reducing environments
However, it’s not recommended for use in oxidizing environments or acids containing oxidizing salts.
Applications of Nickel 200 Alloy
Due to its unique combination of properties, Nickel 200 finds applications in numerous industries:
Chemical Processing
The alloy is widely used in chemical processing equipment:
- Caustic evaporators and storage tanks
- Reaction vessels for organic synthesis
- Piping systems for corrosive chemicals
Food Processing
Nickel 200’s purity makes it suitable for food handling:
- Food processing equipment
- Margarine and shortening production
- Beverage processing systems
Electronics Industry
The alloy’s electrical properties make it valuable for: